Question

$this \: is \: my \: question \: plz \: help$
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Answer 1

Heya mate!!

Angle b = 2a+15°

Angle C=3a+5°

The sum of angles of a quadrilateral is 360°

$angle \: a + angle \: b + angle \: c + 70 = 360$

$70 + 3a + 2a + a + 15 + 5 = 360 \\ 90 + 6a = 360 \\ 6a = 360 - 90 \\ 6a = 270 \\ a = \frac{270}{6} \\ a = 35 \: so \: angle \: b = 2a + 15 \\ 2 \times 35 + 15 = 85 \\ angle \: c = 3a + 5 \\ 3 \times 35 + 5 \\ angle \: c = 110$

Hope it helps u dear✌️✌️